I see two schools of thought here: Locked versus unlocked.
There isn't a right answer, because everybody's neighborhood is different. A storage lot in Austin that has little security and where vandalism of rigs is common, it just might be that leaving it unlocked may be the best thing.
However, I don't believe in letting thieves have free pickings. I vote with my dollars, and don't store my rig at places where I'd be forced to allow vagrants rent-free room, board, and all the copper they feel like ripping out of the walls.
Everyone's security needs are different here.
